using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Drawing;
using GDIDrawer;

namespace Lab4
{
    class Program
    {
        static void Main(string[] args)
        {
            CDrawer Canvas = new CDrawer();

            do
            {
                char guess;
                char[] charArray = null;
                char[] word = null;
                int correct;
                int failure = 0;
                bool win;
                int letter = 0;
                bool gameLost = false;

                Console.Clear();
                Canvas.Clear();

                //title
                Console.WriteLine("\t\t\tLab 4 Dale Chen-Song\n");


                DrawScreen(Canvas);
                GetWord(ref word, out charArray);
                do
                {
                    //user input letter to guess
                    GetGuess("Enter a letter to guess: ", charArray, out guess);

                    //check guessed letter
                    CheckGuess(guess, ref charArray, ref word, out correct, out win, ref letter);

                    DrawScreen(Canvas, guess, charArray, correct, ref failure, ref gameLost);

                } while (!gameLost || !win);
                Console.Write("Do you want to play again? ");
            } while (Console.ReadLine().ToLower() == "yes");
        }
        static private void DrawScreen(CDrawer Canvas)
        {
            //draw gallows
            Canvas.AddLine(350, 100, 350, 450, Color.SandyBrown, 3);
            Canvas.AddLine(350, 120, 450, 120, Color.SandyBrown, 3);
            Canvas.AddLine(350, 400, 500, 400, Color.SandyBrown, 3);
            Canvas.AddLine(350, 410, 475, 445, Color.SandyBrown, 3);
            Canvas.AddLine(350, 445, 475, 410, Color.SandyBrown, 3);
            Canvas.AddLine(475, 400, 475, 450, Color.SandyBrown, 3);
            Canvas.AddLine(350, 140, 370, 120, Color.SandyBrown, 3);
            Canvas.AddLine(420, 120, 420, 150, Color.Red, 1);

            Canvas.AddText("Letters used: ", 20, 200, 25, 180, 50, Color.Blue);
        }

        static private void GetWord(ref char[] array, out char[] newArray)
        {
            string secretWord = "kitten";
            array = secretWord.ToCharArray();
            newArray = new char[array.Length];

            for (int i = 0; i < newArray.Length; i++)
            {
                newArray[i] = '-';
            }
        }
        static private void DrawScreen(CDrawer Canvas, char input, char[] newArray, int success, ref int fail, ref bool lose)
        {

            string correctGuess = new string(newArray);

            Canvas.AddText($"Letters used: {input}", 20, 200, 25, 180, 50, Color.Blue);
            Canvas.AddText(correctGuess, 20, 200, 600, 200, 50, Color.Purple);

            if (success <= 0)
            {
                fail++;
                if (fail == 1)
                {
                    Canvas.AddCenteredEllipse(420, 155, 35, 35, Color.Beige);
                }
                if (fail == 2)
                {
                    Canvas.AddCenteredEllipse(420, 200, 35, 60, Color.Beige);
                }
                if (fail == 3)
                {
                    Canvas.AddLine(420, 170, 380, 210, Color.Beige, 3);
                }
                if (fail == 4)
                {
                    Canvas.AddLine(420, 170, 460, 210, Color.Beige, 3);
                }
                if (fail == 5)
                {
                    Canvas.AddLine(420, 220, 400, 270, Color.Beige, 3);
                }
                if (fail == 6)
                {
                    Canvas.AddLine(420, 220, 440, 270, Color.Beige, 3);
                    Canvas.AddText("You lose!", 80, Color.Purple);
                    lose = true;
                }
            }
        }

        static private void GetGuess(string prompt, char[] array, out char input)
        {
            string guess;       //input guess string from user
            input = ' ';
            bool error = false;

            //repeat until input is right
            do
            {
                //might throw an exception
                try
                {
                    //set error to be false
                    error = false;

                    //user input value for letter
                    Console.Write(prompt);
                    guess = Console.ReadLine();
                    input = Convert.ToChar(guess);

                    //check if the input is valid
                    if (!Char.IsLetter(input))
                    {
                        //display error message if invalid input, prompt user to try again
                        Console.WriteLine("An invalid character was entered, please try again.");
                        error = true;
                    }

                    for (int i = 0; i < array.Length; i++)
                    {
                        if (input == array[i])
                        {
                            //display error message if repeat input, prompt user to try again
                            Console.WriteLine("You have already entered that letter, please try again.");
                            error = true;
                        }
                    }
                }
                //catch any exception thrown
                catch (Exception ex)
                {
                    //display error message, set error condition to true
                    Console.WriteLine(ex.Message);
                    error = true;
                }
            }//continue looping until the input is correct
            while (error);
        }

        static private void CheckGuess(char input, ref char[] newArray, ref char[] answer, out int success, out bool gameWon, ref int letterGuessed)
        {
            success = 0;

            for (int i = 0; i < answer.Length; i++)
            {
                if (input == answer[i])
                {
                    newArray[i] = input;
                    success++;
                    letterGuessed++;
                }
            }

            Console.WriteLine(newArray);
            if (letterGuessed == answer.Length)
            {
                gameWon = true;
            }
            else
            {
                gameWon = false;
            }
            Console.WriteLine(gameWon);
        }
    }
}